From e91337609afdfaa1936c91b519ba7d7e426814cc Mon Sep 17 00:00:00 2001 From: Jamie Lentin Date: Sun, 28 Oct 2012 12:23:24 +0000 Subject: mvebu-gpio: Disable blinking when enabling a GPIO for output The plat-orion GPIO driver would disable any pin blinking whenever using a pin for output. Do the same here, as a blinking LED will continue to blink regardless of what the GPIO pin level is. Signed-off-by: Jamie Lentin Acked-by: Thomas Petazzoni Signed-off-by: Linus Walleij --- drivers/gpio/gpio-mvebu.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'drivers/gpio/gpio-mvebu.c') diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c index cf7afb9eb61a..be65c0451ad5 100644 --- a/drivers/gpio/gpio-mvebu.c +++ b/drivers/gpio/gpio-mvebu.c @@ -92,6 +92,11 @@ static inline void __iomem *mvebu_gpioreg_out(struct mvebu_gpio_chip *mvchip) return mvchip->membase + GPIO_OUT_OFF; } +static inline void __iomem *mvebu_gpioreg_blink(struct mvebu_gpio_chip *mvchip) +{ + return mvchip->membase + GPIO_BLINK_EN_OFF; +} + static inline void __iomem *mvebu_gpioreg_io_conf(struct mvebu_gpio_chip *mvchip) { return mvchip->membase + GPIO_IO_CONF_OFF; @@ -206,6 +211,23 @@ static int mvebu_gpio_get(struct gpio_chip *chip, unsigned pin) return (u >> pin) & 1; } +static void mvebu_gpio_blink(struct gpio_chip *chip, unsigned pin, int value) +{ + struct mvebu_gpio_chip *mvchip = + container_of(chip, struct mvebu_gpio_chip, chip); + unsigned long flags; + u32 u; + + spin_lock_irqsave(&mvchip->lock, flags); + u = readl_relaxed(mvebu_gpioreg_blink(mvchip)); + if (value) + u |= 1 << pin; + else + u &= ~(1 << pin); + writel_relaxed(u, mvebu_gpioreg_blink(mvchip)); + spin_unlock_irqrestore(&mvchip->lock, flags); +} + static int mvebu_gpio_direction_input(struct gpio_chip *chip, unsigned pin) { struct mvebu_gpio_chip *mvchip = @@ -244,6 +266,7 @@ static int mvebu_gpio_direction_output(struct gpio_chip *chip, unsigned pin, if (ret) return ret; + mvebu_gpio_blink(chip, pin, 0); mvebu_gpio_set(chip, pin, value); spin_lock_irqsave(&mvchip->lock, flags); -- cgit v1.2.3